This is the next map for my personal project - it is diectly east of Skalamark, and are two Slavic nations - Kurmdiz, a Cossack hetmanate; and Forindon, a Kyivan Rus kingdom, wuth the eastern part of Skalamark in the top west corner, and the western part of Nilterurn, a Danish type kingdom, but with Ukrainian names.

Obviously just beginning - the mountains and hills are all done though, as are the political borders.